Match the size on your current tyre sidewall to 265/55 R19, then confirm against the vehicle placard (usually in the door shut or fuel flap) or the handbook. Also verify the load index and speed rating, as the correct 265/55 R19 specification can vary between trims and between front and rear on some set-ups.
Use the vehicle placard as the priority reference, then choose a 265/55 R19 tyre with an equal or higher load index than specified. Many vehicles that use this size require higher load ratings and may specify XL (reinforced), so avoid dropping to a lower rating even if the tyre is cheaper.
For mostly mild temperatures and mixed weather, all-season tyres can be a strong match in this size, especially if you want one set year-round. If you prioritise warm-weather braking and handling, choose summer tyres, and if you drive regularly in cold conditions or on snow, pick winter tyres with the 3PMSF marking for proper winter performance.
You can, but only if your vehicle has a spare wheel or an approved repair kit and you are comfortable with the change in puncture plan. Keep the same type across each axle, and check your manufacturer guidance and insurer requirements before switching away from run-flats.
It is usually best to keep the manufacturer-approved size, because changing tyre dimensions alters rolling circumference, speedometer accuracy, and can affect clearance on full lock and under load. If you are considering alternatives like 255/55 R19 or 265/50 R19, confirm approved options for your exact model and fit four matching tyres where recommended.
